MIL-PRF-1/776F
TABLE I. Testing and inspection - Continued.
1/
During all electrical tests involving application of filament power, forced-air cooling of the tube under test is allowable and a
heat-dissipating connector (EIMAC HR-6, or equivalent) may be used on the anode terminal.
2/
The acceptance level for each test listed under conformance inspection, part 1, shall be 1.0 (see 6/).
3/
This test shall be the first test performed at the conclusion of the holding period.
4/
The value of Rg1 = 15,000 ohms shall apply when a self-excited oscillator circuit is used. If an amplifier circuit is used, fixed
bias or a combination of fixed bias and grid-leak resistance may be used.
5/
This test shall be performed during the initial production and once each succeeding 12-calendar months in which there is
production. An accept on zero defect sampling plan shall be used, with sample of three tubes with an acceptance number of
zero defects. In the event of failure, the test will be made as a part of conformance inspection, part 2, acceptance level 6.5
(see 6/). The regular "12-calendar month" sampling plan shall be reinstated after three consecutive samples have been
accepted.
6/
This specification sheet uses accept on zero defect sampling plan in accordance with MIL-PRF-1, table III.
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